For example, a heavy object is lifted by levers and dropped, producing energy with the force of falling (gravity + object), and that heavy object is lifted with less force than it produces, using levers, Can this be possible?
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Please take a look to make sure my edit made sense with what you wanted. I believe you meant that the object is lifted with less force than it produces. – JMac Feb 12 '20 at 20:14
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Yes, my english is not very good. – Feb 12 '20 at 20:16
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I've seen much worse than that. I was able to understand it enough to fix it, so it really wasn't that bad. – JMac Feb 12 '20 at 20:18
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1It is not clear to me what you are asking. Are you asking if it is possible to create unlimited amounts of free energy by using less energy to lift them up than the energy which they release when they fall? – sammy gerbil Feb 12 '20 at 20:25
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Well not unlimited, but some extra energy, that maybe it will stops one day and needs external energy to work again, i ask if that's possible, using less force by using levers – Feb 12 '20 at 20:40
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Possible duplicate of Feynman Lectures: Why a non-reversible weight lifting machine cannot lift higher that a reversible one? – sammy gerbil Feb 12 '20 at 20:44
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What do you mean by "some extra energy"? Do you mean that we get more energy out than we put in? – sammy gerbil Feb 12 '20 at 20:45
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Yes that, the heavy object produces more force than it takes lifting it with levers – Feb 12 '20 at 20:48
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When you say "force" you mean "energy" right? For example you want to raise a heavy object using 100J of energy using levers, then let it fall down and release say 101J of energy. – sammy gerbil Feb 12 '20 at 20:50
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Yes, i'm asking if that's possible, using levers, because with them you can raise a heavy object with less force, or energy. – Feb 12 '20 at 20:56
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Let us continue this discussion in chat. – Feb 12 '20 at 21:52
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no it is not possible. When you lift a mass with a lever an use only say 1/5 of its weight yo can lift it only 1/5 of the height you could lift ist with the fullforcd, so it would drop only 1/5 of the way an you do not gain any energy. The golden rule of mechanics says: the smaller the force, the longer the way of the force, so to lift something a d inch, you always have the work or energy mgd. The force to lift mg can be half, than the distance for the force ist 2d.
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